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Bending area structure of flexible display panel

a flexible display panel and bending structure technology, applied in the direction of identification means, instruments, photomechanical equipment, etc., can solve the problems of reducing the service life of the device, and achieve the effect of preventing the bending area structure, and reducing the bending stress

Active Publication Date: 2021-04-13
WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present patent discloses a new way to bend flexible display panels that reduces bending stress and prevents damage to the display. This is accomplished by adding protrusions on the organic layer, which helps to increase the lifespan of the display.

Problems solved by technology

When the bending area is bent 180 degrees, each film layer of the bending area is subjected to a bending stress and stretching thereof for a long time may cause bending cracks to form between the film layers or inside the film layers, thereby reducing a service life of the device.

Method used

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  • Bending area structure of flexible display panel
  • Bending area structure of flexible display panel
  • Bending area structure of flexible display panel

Examples

Experimental program
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Effect test

fifth embodiment

[0057]As shown in FIG. 7A, in the present disclosure, the first protrusions 31a are arranged in an array on the first organic layer 30e, and distances d between the first protrusions 31a are uniform, i.e., densities are uniform. The bending stress received by the bending area structure 100e is reduced by the first protrusions 31a which are arranged in an array.

sixth embodiment

[0058]As shown in FIG. 7B, in the present disclosure, the first protrusions 31a are arranged in an array on the first organic layer 30f. A distance d1 between the two first protrusions 31a which is close to the bending centerline CL is smaller than a distance between the two first protrusions 31a which is far from the bending centerline CL, i.e., a density of the protrusions 31a which is close to the bending centerline CL is greater than a density of the projections 31a which is away from the bending centerline. Therefore, the bending stress of the bending area structure 100f can be further reduced.

[0059]As shown in FIG. 7C, the seventh embodiment of the present disclosure is substantially the same as the fifth embodiment. The first protrusions 31a are arranged in an array on a first organic layer 30g. Distances d between the first protrusions 31a are uniform, i.e., the density is uniform. However, the first protrusions 31a of adjacent rows are alternately disposed, so that the effe...

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Abstract

A bending area structure of a flexible display panel is disclosed and includes a flexible substrate layer, a circuit layer, and at least one organic layer. The circuit layer is disposed on the flexible substrate layer. The at least one organic layer is disposed on the circuit layer. A plurality of protrusions are arranged on an upper surface of the at least one organic layer.

Description

RELATED APPLICATIONS[0001]This application is a National Phase of PCT Patent Application No. PCT / CN2019 / 070024 having International filing date of Jan. 2, 2019, which claims the benefit of priority of Chinese Patent Application No. 201810995012.0 filed on Aug. 29, 2018. The contents of the above applications are all incorporated by reference as if fully set forth herein in their entirety.FIELD AND BACKGROUND OF THE INVENTION[0002]The present disclosure relates to a bending area structure of a flexible display panel, and more particularly to a bending area structure of a flexible display panel in which a protrusion is disposed on an organic layer to reduce stress received by the bending area.[0003]As the next generation of mainstream display panels, flexible panels have attracted more and more attention. Flexible display panels enable a screen to display a complete picture when the screen is bent freely like a paper. The flexible display panels possess advantages of small size and li...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): B32B3/30B32B27/08H01L51/00B32B7/00B29C59/02B29L31/34B32B7/12H10K99/00
CPCB32B3/30B32B7/00B32B27/08H01L51/0097B29C59/022B29L2031/3475B32B7/12B32B2457/20H01L2251/5338Y10T428/2457Y10T428/24521Y10T428/24529Y10T428/24537Y10T428/24612Y10T428/24669G03F7/0002G09F9/301B32B1/00Y02E10/549H10K77/111H10K2102/311
Inventor SHI, JIE
Owner WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD